85907071 has 4 divisors (see below), whose sum is σ = 86476144. Its totient is φ = 85338000.

The previous prime is 85907053. The next prime is 85907099. The reversal of 85907071 is 17070958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85907071 - 2¹⁹ = 85382783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85907071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85907021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284310 + ... + 284611.

It is an arithmetic number, because the mean of its divisors is an integer number (21619036).

Almost surely, 2^85907071 is an apocalyptic number.

85907071 is a deficient number, since it is larger than the sum of its proper divisors (569073).

85907071 is a wasteful number, since it uses less digits than its factorization.

85907071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569072.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 85907071 is about 9268.6067453528. The cubic root of 85907071 is about 441.2414509334.

The spelling of 85907071 in words is "eighty-five million, nine hundred seven thousand, seventy-one".